Engine cooling apparatus



Jan. 5, 1932.

C BALOUGH ENGINE COOLING APPARATUS Filed May 2, 1929 2 Sheets-Sheet lgjwue'ntoz (fiarles Balauy/z 1 F 61am,

Jan. 5, 1932.

C. BALOUGH ENGINE COOLING APPARATUS Filed May 2, 1929 2 Sheets-Sheet 2my a 37m: zmtoc fiarles Balauyfi Patented Jan. 5, 1932 stares; PATENTersion:

cnanrns :eanorrerr, or cannon, onro. ASSIGNOR 'ro HERCULES MOTORSconrolm- TION', or CANTON, 01110, A oonronn'rron or OHIO ENGINE oooLInGAPPARATUS Application filed May'2, 1929. Serial No. 359,862.

My invention relates to apparatus for cooling engines, andmoreparticularly in ternal combustion engines. Such apparatus usuallyincludes compartments formed in the cylinder block about the enginecylinders for permitting a flow of cooling medium, usually water, aboutthe cylinders.

lhe cooling compartments communicate at one end with a radiator, and theradiator communicates with a pump, which in turn communicates with thecylinder block cooling compartments, thus providing a circulatorypassageway for the cooling medium.

As usually arranged, the pump is mounted on a bracket, and the bracketis secured upon the engine at some convenient place. Pipes provide thecommunicating connection be tween the pump and the radiator, and pipesor rubber hose and clamps provide the communicating connection betweenthe pump and the cylinder head compartments.

The necessity for the bracket increases the cost of manufacture. Thehose connections with their clamps, also increases the cost, and must beconstantly inspected to avoid 1eakage. Bracket mountings for pumps arefre quently inaccessible, and tend to jar loose. The greater thedistance between the pump and the cylinder block compartments, thegreater the friction loss caused by the communicating pipe or hose, andconsequently the greater the power required for the pump I drive.

The objects of the present improvements include the provision of engine,cooling apparatus in which the foregoing disadvantages of the usualforms, are either obviated or minimized.

These objects are attained in'the present invention, as will hereinafterbe set forth in detail, and claimed.

A preferred embodiment of the improvements is illustrated in theaccompanying drawings forming part hereof, in which Figure l is afragmentary transverse sectional view of an internal combustion engineequipped with theimproved cooling appa-, ratus hereof, the pump beingillustrated in elevation;

and

Fig. 3, an enlarged view similar to Fig. 1 on another transverse plane,with the pump and walls of the engine providing commuof which isillustrated, withan improved.

pump 16.

The pump 16 includes a combinedsupport and housing 17 having wallsforming a rotorcompartment 18, an inlet duct 19 providing; acommunication between the pipe end 15 and the rotor compartment 18, andan outlet duct 20 providing a communication from the rotor compartment18.

A rotor 21 is secured upon a shaft 22 which is journalled in suitablehearings in the support and housing 17, the shaft 22 extending outsideof the housing for connection with suitable drive gearing, not shown, onthe englne.

. As illustrated the operating parts of the pump comprise a centrifugalimpeller, but the scopeof the invention is not limited to the use ofsuch mechanisms.

The combined support and housing 17 is adapted for being mounteddirectly upon the engine without the use of any bracket, and isfurthermore adapted for communicate Fig 2, a fragmentary plan Viewthereof;

ing directly with the cooling compartments.

of the cylinder block, without the use of any pipe or hose connections.

ished seat 26 formed on the engine 10. The flange 23 is provided withapertures through which cap screws 27 may extend and screw into threadedsockets in the engine walls, for securely mounting the pump upon theengine.

As illustrated, the engine seat 26 is formed on the crank case 11, butmay be formed on any other desired part of the engine such as thecylinder block.

In the illustrated embodiment the outlet duct 20 in the housing 17connects at the seat 26 with the lower end of a crank case duct 28extending upwardly therefrom and connecting at its upper end with acylinder block orifice 29 communicating with the cooling compartments 13for completing the circulatory passageway for the cooling medium, whichis usually water.

The foregoing construction and arrangement of the engine coolingapparatus, eliminates piping or hose between the pump 16 and thecylinder block, and consequently minimizes leakages and saves the costof such parts.

It also eliminates a separate pump bracket for supporting the pump uponthe engine, and provides a rigid mounting for the pump, and makes thepump very accessible and easy to replace.

It provides the shortest route from the pump to the member to be cooled,thereby cutting down friction losses with a consequent reduction in thepower required for driving the pump.

I claim:

1. Cooling apparatus including an engine and a pump mounted directlyupon the en gine the engine including a cylinder block and a crank case,walls of the cylinder block forming cooling compartments therein, wallsof the crank case forming an upwardly extending duct communicating withthe cylinder block cooling compartments, and the pump communicatingdirectly with the crank case duct.

2. Cooling apparatus including an engine, a radiator and a pump, theengine including a cylinder block and a crank case, walls of thecylinder block forming cooling compartments therein, the pump beingmounted directly upon the side of the crank case and ineluding wallsforming an inlet and an outlet, walls of the crank case forming anupwardly extending duct communicating with the cylinder block coolingcompartments, the pump outlet being directly connected to the crank caseduct and the pump inlet being adapted tobe connected to the bottom ofthe radiator.

In testimony that I claim the above, I have hereunto subscribed my name.

CHARLES BALOUGH.

